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Newsgroups: comp.lang.ada
Subject: Re: Pragma for conditional compilation? (Ada 2005 vs. 95)
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From: Stephen Leake <stephen_leake@stephe-leake.org>
Date: Sat, 29 Sep 2007 06:29:48 -0400
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Date: 2007-09-29T06:29:48-04:00
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Simon Wright <simon.j.wright@mac.com> writes:

> Pascal Obry <pascal@obry.net> writes:
>
>> Note the double underscore to be sure that those files are not found
>> automatically by the project file when storing the OS specific units
>> with all the other sources.
>
> I never realised you could do this .. and I thought I had read the
> friendly manual, too. 

Me, too.

The GNAT user's guide says:

    By default, if neither the attribute `Source_Files' nor the
    attribute `Source_List_File' is given an explicit value, then each
    file in the source directories that conforms to the project's
    naming scheme (*note Naming Schemes::) is an immediate source of
    the project.

It just never occurred to me to use a file name for an Ada file that
did _not_ follow the naming convention!

I think I was implicitly assuming that any file with an .ads or .adb
extension would be accepted by gnatmake, and since that's also the
rule Emacs uses, I would not use a different extension for this
purpose.

But the actual gnatmake rule is stricter than that, so there are other
ways to violate it, while keeping the extension.

-- 
-- Stephe